City of Portsmouth NH Property Tax Rate Set at $11.51

The New Hampshire Department of Revenue Administration has approved the City of Portsmouth, NH property tax rate of $11.51 per $1,000 of valuation for Fiscal Year 2026. The new tax rate is six cents lower than the estimated rate in the FY26 Adopted Budget due to greater than expected property growth. Nearly $200 million in property development this year has strengthened the City’s tax base, offsetting the overall tax impact by 23 cents per $1,000 of valuation and cutting the projected tax increase by 41%.

The newly approved tax rate will be reflected in the tax bills which will be mailed in December, with the first half due in January 2026 and the second half due in June 2026. The City of Portsmouth provides an online tax calculator at portsnh.co/taxcalc for residents to estimate their tax bill. The City urges taxpayers to pay their tax bills online at portsnh.co/paybill, where they will receive instant confirmation and receipt. Payment options are listed on the back of the tax bill and on the Tax Department page of the City website.

For information about tax abatements including relief for elderly, disabled, or veteran residents and for financial hardship, visit the Assessor’s office at portsnh.co/assessors or call 603-610-7249.